This is how I see it:
1st wave: right to vote and legal citizen-hood
2nd wave: equal pay for equal work, sexual revolution
3rd wave: riot grrl, spice girls, rise of liberal feminism and sex-positive feminism
4th wave: intersectional feminism, split between intersectionals and radical feminists over the trans debate.
Have I got this horribly wrong? I hear anti-feminists describe the current wave as the 3rd wave and need some clarification over which bits go where. 